e2fsck check a Linux ext2/ext3/ext4 file system
e2fsck
e2fsck -D Optimize directories in filesystems
e2fsck -D
ext4
e2fsck, fsck.ext4, superblock, inode, block size, mkfs.ext4 tune2fs
fsck.ext4
wipefs
resize2fs
stat
extents
virt-resize
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